Citazione Stile APA (7a Edizione)

HOLT, R. T. (1970). The methodology of comparative research. Free Press.

Citazione stile Chigago Style (17a edizione)

HOLT, Robert T. The Methodology of Comparative Research. New York: Free Press, 1970.

Citatione MLA (9a ed.)

HOLT, Robert T. The Methodology of Comparative Research. Free Press, 1970.